Some BHspin V2 units are showing remaining times to be 1d 4hrs to 1d 6hrs to run, while others show the usual 5 to 7 hrs to process.

What's up with these long runs?

Dropping BHspin from my list.
Hopefully there are other tasks out there.
It's killing my other projects all my stats are going down fast.

I think they do better on Intel CPUs, at least when running Linux. I have not had a "long runner" on the 0.09 BHspin v2 since it was released on 23 September. I used to get about one a month. And when I tried them on my Ryzen 1700, I would get at least one long runner a week. So they are doing better, but apparently not perfect yet.

Just abort the problematic tasks! The tasks available now have very short completion time. I like this batch very much.